( Dans les bréves du 23/04 à droite dans la page)pour les Anglicistes.
et dans Energy bulletin directement : http://www.energybulletin.net/node/48731L’énergie, véritable moteur de l’économie (Energy Bulletin)
jeudi 23 avril
Energy is everything
by Michael Lardelli
It is fascinating to watch the behaviour of our political and business leaders as they attempt to cope with the world’s deepening financial crisis. It is becoming clear that they don’t have a clue what is actually going on. Their blindness is explained by confusion about what actually enables economic growth. The shared delusion is that money makes the world go round.
As share and asset values crash we hear talk of deflation. Many nations are trying to counter this by expanding their money supply. However, they seem to have forgotten the most basic fact about money that we are taught in school - that it is a medium of exchange. Money allows agreements on relative “value” (how much of one thing will be exchanged for another) but it has no intrinsic value itself. It is simply a mechanism that allows the distribution of real “stuff”. So if the economy is crashing what is this “stuff” that is disappearing ? It can be summed up in one word - energy. Energy is everything
No living or manufactured thing exists on this planet without energy. It enables flowers and people to grow. We need energy to mine minerals, extract oil or cut wood and then to process these into finished goods. Without energy the goods would not exist so we can think of each product as containing “embodied energy”. So the most fundamental definition of money is that it is a mechanism to allow the exchange and allocation of different forms of energy. The economy is energy.
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Sources Energy Bulletin
avec quelques graphes interessants ( et inédits sur notre forum)
The world’s energy production is now declining and the profitability of energy production is declining at the same time. This means that the net energy available to support activities other than energy procurement will decrease much faster than the fall in total energy production. We are approaching a “net energy cliff” that gets very serious when less than five units of energy are produced for each unit of energy invested:
(From Euan Mearns at europe.theoildrum.com. “ERoEI” is Energy Returned on Energy Invested. The ERoEI of oil production has fallen from ~ 30:1 in 1970 to from 11 to 18: 1 in 2000.)
